TOUCH PANEL HAVING REDUCED NUMBER OF INTERCONNECTS AND TOUCH INPUT/OUTPUT APPARATUS HAVING THE SAME
First Claim
1. A touch panel comprising:
- a first substrate comprising a plurality of first touch electrodes formed on a first base substrate, the first touch electrodes each having a first width, where the first touch electrodes are elongated in a first direction and arranged in parallel one next to the other so as to thereby be distributed along a second direction crossing the first direction; and
a second substrate comprising a plurality of second touch electrodes formed on a second base substrate that is in spaced apart facing relationship with the first base substrate, where the second touch electrodes each have a second width narrower than the first width, and where the second touch electrodes are elongated in the second direction and arranged in parallel one next to the other so as to thereby be distributed along the first direction.
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Accused Products
Abstract
A touch panel includes first and second normally spaced apart substrates. The first substrate includes first spaced apart touch electrodes extended in a first direction and each having a first width (W1). The second substrate includes second spaced apart touch electrodes extended in a different second direction and each having a second width (W2) which is substantially narrower than the first width. One of the substrates can be flexed so that momentary shorting contact is established between corresponding first and second touch electrodes at positions where pressing touch is provided. A combination of interconnect wirings and interrogation circuits are provided for automatically determining where and when the temporary shorting contacts were made, even if plural ones are simultaneously made. The disclosed embodiments include ones where the number of interconnect wirings are reduced.
48 Citations
23 Claims
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1. A touch panel comprising:
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a first substrate comprising a plurality of first touch electrodes formed on a first base substrate, the first touch electrodes each having a first width, where the first touch electrodes are elongated in a first direction and arranged in parallel one next to the other so as to thereby be distributed along a second direction crossing the first direction; and a second substrate comprising a plurality of second touch electrodes formed on a second base substrate that is in spaced apart facing relationship with the first base substrate, where the second touch electrodes each have a second width narrower than the first width, and where the second touch electrodes are elongated in the second direction and arranged in parallel one next to the other so as to thereby be distributed along the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A touch input/output apparatus comprising:
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a touch panel assembly comprising a touch panel, the touch panel comprising; a first substrate comprising a plurality of first touch electrodes formed on a first base substrate, the first touch electrodes each having a first width (W1) and being extended in a first direction, the first touch electrodes being arranged one after the other in a different second direction; and a second substrate comprising a plurality of second touch electrodes formed on a second base substrate facing the first base substrate, the second touch electrodes each having a second width (W2) narrower than the first width and being extended in the second direction, the second electrodes being arranged one after the other in the first direction; and a touch position controller operatively coupled to the first and second substrates for determining one or more touch positions corresponding to touchings on the panel that cause one or more of the first touch electrodes to come into shorting contact at the touch positions with a corresponding one or more of the second touch electrodes. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A machine-implemented method of determining resistively one or more positions where shorting contact has been momentarily established between a corresponding one or more of a first plurality of spaced apart and parallel to one another first touch electrodes and a corresponding one or more of a second plurality of spaced apart and parallel to one another second touch electrodes, where the second touch electrodes cross with the first touch electrodes, said method comprising:
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applying through a first resistance (R1) a first interrogating voltage (V1) to adjacent first ends of the first touch electrodes; applying through a second resistance (R2) a second interrogating voltage (V2) to adjacent second ends of the second touch electrodes; continuously or repeatedly testing for a change of developed voltage on respective ones of the first and second touch electrodes; and in automatic response to detection of change of developed voltage on respective ones of the second touch electrodes, automatically applying through a third resistance (R3) a third interrogating voltage (V3) to a corresponding third end of at least one of the second touch electrodes whose voltage was detected as being changed, where the third end is opposed to the second end of that voltage-change experiencing second touch electrode. - View Dependent Claims (23)
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Specification